Hi,
Upon logging into my CentOS 7 VM, my $JAVA_HOME is always set to : /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64/jre, which is incorrect.
My ~/.bash_profile reads:
.bash_profile
Get the aliases and functions
if [ -f ~/.bashrc ]; then . ~/.bashrc fi
User specific environment and startup programs
JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64/jre export JAVA_HOME
PYCHARM_HOME=/opt/pycharm-community-2017.2.3/ export PYCHARM_HOME
ECLIPSE_HOME=/opt/eclipse export ECLIPSE_HOME
export SPARK_HOME=/opt/spark
PATH=$PATH:$HOME/.local/bin:$HOME/bin:$JAVA_HOME/bin:$SPARK_HOME/bin:$PYCHARM_HOME/bin:$ECLIPSE_HOME
export PATH Sourcing .bash_profile each time I open a new terminal appears to correct the issue, but why is my $JAVA_HOME path defaulting to an old version on startup and not being set to the directory specified in .bash_profile?
help me!
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Try putting them in the ~/.bashrc file instead of the ~/.bash_profile file.
Basically… when you start the shell, .bashrc will be sourced at first. I think this SuperUser answer will explain the difference much better than me, as it’s a bit of longer answer.
Override JAVA_HOME in ~/.bash_profile
To ensure your JAVA_HOME is set correctly, you can add the following to your ~/.bash_profile:
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64/jre
export PATH=$PATH:$JAVA_HOME/bin:$SPARK_HOME/bin:$PYCHARM_HOME/bin:$ECLIPSE_HOME/bin
Adding export ensures that the variable is available in all child processes, including any scripts or applications that rely on it.
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